Gregory Thompson, MD
Radiation Oncology · Chillicothe, OHNPI 1750512349
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $484 of the $755 with a category attached, or 64.1%. Varian Medical Systems, Inc. accounts for 61.6% of it on its own, with 13 other manufacturers making up the rest. Reporting peaked in 2020 at $411 and has fallen 66.7% since, to $137 in 2025.
Across 18 payments — averaging $41.96 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Varian Medical Systems, Inc.$466
- Elekta, Inc.$40
- Johnson & Johnson$37
- Gilead$32
- Jazz Pharmaceuticals Inc.$31
- Daiichi Sankyo Inc.$27
- plus $122 from 8 others
What the payments were for
- Travel & lodging$27136%
- Food & beverage$48464%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Varian Medical Systems, Inc. | 3 | $466 |
| Elekta, Inc. | 1 | $40 |
| Johnson & Johnson | 2 | $37 |
| Gilead | 1 | $32 |
| Jazz Pharmaceuticals Inc. | 2 | $31 |
| Daiichi Sankyo Inc. | 1 | $27 |
| Stemline Therapeutics Inc. | 1 | $20 |
| Merck | 1 | $19 |
| Immunitybio, Inc. | 1 | $16 |
| Ferring Pharmaceuticals Inc. | 1 | $15 |
| Agios Pharmaceuticals, Inc. | 1 | $14 |
| Astellas Pharma US Inc | 1 | $14 |
| Seagen Inc. | 1 | $13 |
| Bayer | 1 | $12 |
How this compares
$755 in reported general payments places this provider in the 65th percentile of 255 radiation oncology providers in Ohio.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Oxycodone Hcl | 54 | $1,570 |
| Tamsulosin Hcl | 126 | $1,206 |
| Bicalutamide | 17 | $249 |
| Levothyroxine Sodium | 26 | $158 |
| Lidocaine Hcl ViscousLidocaine Hcl | 12 | $156 |
| LoperamideLoperamide Hcl | 12 | $136 |
| Gabapentin | 16 | $94 |
| Omeprazole | 16 | $89 |
| Duloxetine Hcl | 12 | $69 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Chillicothe
- Steven KurtzmanGarfield Heights$833K
- Joshua PalmerColumbus$123K
- Norleena PoynterSandusky$90K
- Daniel SprattCleveland$86K
- Shlomo KoyfmanCleveland$72K
- Gerald SokolCleveland$61K
- Peter FriedFairfield$45K
- Rahul TendulkarCleveland$26K
- Sujith BaligaColumbus$26K
- Anthony ParavatiKettering$24K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.